Maxnvinuse, Maxnvsupported – Echelon OpenLNS User Manual

Page 430

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OpenLNS Programmer's Reference

393

Added to API

Prior to LNS Release 3.0.

MaxNvInUse

Summary

Indicates the current maximum network variable index in

use on the device containing this

Interface.

This figure applies to all Interfaces

on the device, and that

this value reflects both static and dynamic network variables.
The value of the MaxNvInUse property will always be equal

to the value of the StaticNvCount property, minus 1, in

Neuron hosted applications because they do not support

dynamic network variables.

Availability

Local, full, and lightweight clients.

Syntax

maxIndex = interfaceObject.

MaxNvInUse

Element

Description

interfaceObject

The

Interface

object to be acted on.

maxIndex

The maximum network variable

index in use.

For Neuron hosted applications,

possible values are between 0 to

61.

For host-based applications,

possible values are between 0 to

4095.

Data Type

Integer.

Read/Write

Read only.

Added to API

Prior to LNS Release 3.0.

MaxNvSupported

Summary

Indicates the m

aximum possible number of network

variables supported by the device containing this Interface.
This property specifies the maximum number of network

variables, whether static or dynamic, that the device

containing this Interface object may have. The number of

static network variables is fixed; therefore, this property

essentially puts a limit on the number of dynamic network

variables (which will be equal to MaxNvSupported minus

StaticNvCount).
MaxNvSupported will always be equal to StaticNvCount in

Neuron Chip-hosted applications, since they do not support

dynamic network variables.
The possible values are 0 to 62 for Neuron Chip-hosted

applications, and 0 to 4096 for host applications.

Availability

Local, full, and lightweight clients.

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